Home / 15,400.94-21,120.72-14,761.85

Finding the Fourth Proportional to 15,400.94, 21,120.72 and 14,761.85

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Solution

The fourth proportional to 15,400.94, 21,120.72 and 14,761.85 is: 20,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.94 : 21,120.72 = 14,761.85 : x
  2. Step 2: Convert to fraction form
    15,400.94/21,120.72 = 14,761.85/x
  3. Step 3: Cross multiply
    15,400.94x = 21,120.72 × 14,761.85
  4. Step 4: Simplify right side
    15,400.94x = 311,780,900.53
  5. Step 5: Solve for x
    x = 311,780,900.53/15,400.94
  6. Step 6: Final answer
    x = 20,244.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.